Category Based PPC Engines

Others Like Roar?

[filmbooks]

I've noticed Roar has an interesting approach to it's PPC engine - using finite categories instead of relying on keywords. Are there other quality PPC engines out there that use this approach? I know goclick does has a similar front page, but I 'd be interested in knowing about others.

Thanks,

Steve

[seth_wilde]

Sprinks used to haved category style listings for about.com (until google bought them)... but, I haven't tried anything similar lately that produced good results..

[Robino]

Business.com

[shorebreak]

Business.com has something like 13,000 categories.

[KanoodleDood]

Hi all. I am from the Kanoodle team and I wanted to let you know that we've launched ContextTarget which allows you to buy contextual advertising by category. Currently, we are only offering Financial categories and these listings appear on CBS MarketWatch.com. We are planning to roll our more categories sometime soon!